The country’s TSOs are planning a transitional strategy ensuring electricity supply for the country’s non-interconnected islands still not linked to the mainland grid, as well as a second plan that would boost production capacity and serve as back-up once subsea cable interconnections linking non-interconnected islands have begun operating.

The transitional plan, the most urgent of the two initiatives, is the responsibility of distribution network operator DEDDIE/HEDNO and concerns providing energy coverage for islands to be interconnected as part of the fourth phase of the Cyclades interconnections, plus the Dodecanese and northeast Aegean islands, until power grid operator IPTO has completed its interconnection projects linking all these regions with the mainland.

Development of these projects will need to be synchronized with power utility PPC’s gradual withdrawal of old power plants it operates on islands, when they experience functional issues. Spare parts for these units, now outdated, are difficult to find.

PPC intends to gradually withdraw 32 old power plants with a total capacity of approximately 50 MW from non-interconnected islands. The power utility will do likewise with old facilities on Crete.